Stroke-adjuster for windmills.



PATENTEDJUNE 11. 1907.

1?. S. LAFLIN.

STROKE ADJUSTER FOR WINDMILLS.

APPLICATION FILED FEB. 21, 1907.

2 SHBETSSHEET 2.

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UNITED STATES PTENT OFFICE.

STRQKE-ADJUSTER FOR WINDIVHLLS.

Specification of Letters Patent.

Patented June 11, 1907,

Application filed February 21, 1907. Serial No. 358,645.

To all whom, it may concern.-

Be it known that I, FRANK S. IJAFLIN, a citizen of the United States,residing at Sears, in the county of Rock Island and State of Illinois,have invented certain new and use ful In'iprovements in Stroke-Adjustersfor Windmills, of which the following is a specification.

This invention relates to improvements in stroke adjusters l'o rwindmills.

The object of the invention is to provide mechanism for altering thestroke of a windmill, with as little friction between the parts aspossible, consistent with a strong and durable structure.

In the organization of the mechanism, the shifting device for alteringthe stroke is so located as to enable one to increase or decrease thelength of the stroke; the specific manner of accomplishing thisoperation and the description of the construction being hereinafterpointed out.

In the drawings Figure 1 is a side elevation of my improvement appliedto a wind mill. Fig. 2 is an enlarged detail perspec tive view of thestroke adjusting mechanism. Fig. 3 is a horizontal section on the line33, Fig. 1. Fig. 4 is a transverse vertical section on the line l4, Fig.1.

In the drawings; 1, indicates the frame of a windmill 2, a pump 3, thepump rod, composed of two sections 4 and 5. To the section 4, ispivotally connected, as at 6, the curved end of a bent track 7, pivotedto the frame 1, at S. The connection 8, comprises clamp 9, which ispassed around one leg of the frame, and provided with cars 10, throughwhich and the long arm of the track 7, passes the pivot pin 11. Thetrack 7, is formed of a single piece, and is bent at 12, to provide anupper short leg 13, and a lower long leg 14, the former terminatingapproximately in alinement with the pump rod Encircling the lower leg14, is a sleeve 15, adapted to slide back and forth thereon, and ispivotally connected at 16, with the lower pump rod section 5.

Secured on the frame 1, is a windlass 17, having a handle 18, and pawland ratchet 19. A rope or chain 20, is wound around the drum 17 thenpasses around a pulley 21, and is secured to a projection on the sleeve15. A second rope 22, is also connected to the sleeve and passes over apulley 23, mounted in a bracket which straddles the legs 13 and 1 1, ofthe track 7. Rope 22, after passing around pulley 23, passes around apulley 24, thence down to and around the drum 17. The ropes 20 and 22,pass around opposite sides of the drum, as to wind one, when the otheris unwound, and vice versa.

In operation, assume the parts to be as shown in full lines in Fig. 2,and it is desired to decrease the length of stroke of the pump rod 3,the drmn 17, is revolved in direction of arrow a, which draws sleeve 15,toward the left, as shown by the dotted line position as, rope 22, inthe meantime being unwound from the drum. Obviously when the sleeve 15,is in the dotted line position a, the stroke of the lower rod section 5,is materially less, than when the sleeve was in the central or full lineposition. To increase the stroke of the pump red, the drum 17, isrevolved in direction of arrow 1), which winds the rope and draws thesleeve 15, toward the right, as shown in the dotted line position 10,(Fig. 2,) the rope 21, in the meantime being unwound. IVhcn the sleeveis in this position thedistance from the pivot 11 is greater than whenin either the full left hand or central positions previously described,hence the length of the stroke of the rod section 5, is increased.

The invention is extremely simple in construction and it is thought fromthe foregoing description, taken in connection with the ac companyingdrawings the operation and advantages will be rezulily understood bythose skilled in the art to which it appertains.

hat I claim is:

1. In combination, a sectional pump red a track formed with a short legand a long leg, a support, means for pivotally connecting the short legof the track to one section, means for pivotally connecting the long logto the support, a sleeve pivotally connected. to the other said pump rodsection and slidably mounted on the track, and means for sliding thesleeve on the track and moving the pump rod section to which said sleeveis connected to alter the stroke of the pump rod section carrying thesleeve.

2. In combination, a pump rod formed in sections, a track pivotallyconnected to one of said sections, a sleeve slidably mounted on thetrack, and pivotally connected to the other said pump rod section, andmeans for sliding the sleeve on the track and moving the pump rodsection to which said sleeve is connected to alter the stroke of thepump rod section carrying the sleeve.

3. In combination, a sectional pump rod, a

track pivoted to one pump rod section, a support, means for pivotallyconnecting the track to the support, a sleeve slidably mounted on thetrack and pivotally connected to the other said pump rod section, aguide mounted on the track, guides mounted on the support, a drum, arope connected to the sleeve and passing over the guide on the track andover one of the guides on the support to the drum, a second ropeconnected to the sleeve and passing over one of the guides on thesupport then to the drum, the movement of the drum operating the ropesand moving the sleeve and the pump rod section with which it isconnected to alter the stroke of said pump rod.

4. In combination, a sectional pump rod, a support, a track having oneend pivotally connected to a pump rod section and extending outwardlytherefrom and bent upon itself and extending beyond the point ofconnection With the pump rod section, means for pivotally connecting thesaid extended end to the support, a sleeve slidably mounted on thetrack, and means for sliding the sleeve either side the point ofconnection of the pump rod section and the track and moving the pump rodsection to Which said sleeve is connected.

In testimony whereof I have signed my name to this specification in thepresence of tWo subscribing Witnesses.

FRANK S. LAFLIN.

Witnesses:

ADAIR PLEASANTS, C. R. HULsBRINK.

